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Subtract 56/18 from 28/40

1st number: 28/40, 2nd number: 3 2/18

28/40 - 56/18 is -217/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 18 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    28/40 = 28 × 9/40 × 9 = 252/360
  3. Likewise, for the 2nd fraction, since 18 × 20 = 360,
    56/18 = 56 × 20/18 × 20 = 1120/360
  4. Subtract the two like fractions:
    252/360 - 1120/360 = 252 - 1120/360 = -868/360
  5. After reducing the fraction, the answer is -217/90

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